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Doc Bug #26730 [chm] bug on function.explode.html
Submitted: 2003-12-28 07:26 UTC Modified: 2004-02-22 14:41 UTC
From: tomas dot matousek at matfyz dot cz Assigned:
Status: Wont fix Package: Documentation problem
PHP Version: 5.0.0b2 (beta2) OS: windows
Private report: No CVE-ID: None
View Developer Edit
 [2003-12-28 07:26 UTC] tomas dot matousek at matfyz dot cz 
Description:
------------
The explode() function misbehaves if the limit parameter has invalid value.


Reproduce code:
---------------
explode(",","a,b,c,d,e,f",-8);
explode(",","a,b,c,d,e,f",0);



Expected result:
----------------
Warning + returning FALSE

Actual result:
--------------
invalid value is treated as if it was 2 and 1 respectively

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 [2003-12-28 14:50 UTC] iliaa@php.net 
Thank you for taking the time to write to us, but this is not
a bug. Please double-check the documentation available at
http://www.php.net/manual/ and the instructions on how to report
a bug at http://bugs.php.net/how-to-report.php

When number parts is <0 the value defaults to 1, when it is 
0 it simply returns the specified string.
 [2004-01-11 05:37 UTC] tomas dot matousek at matfyz dot cz 
It should be so, but it is not.
I've tested the following code:

    var_dump(explode(",","a,b,c,d,e,f",-8));
    var_dump(explode(",","a,b,c,d,e,f",0));
    var_dump(explode(",","a,b,c,d,e,f",1));

and got the following results (in PHP 5.0.0b2 as well as in PHP 4.3.4):

array(2) {
  [0]=>
  string(1) "a"
  [1]=>
  string(9) "b,c,d,e,f"
}
array(1) {
  [0]=>
  string(11) "a,b,c,d,e,f"
}
array(1) {
  [0]=>
  string(11) "a,b,c,d,e,f"
}

IMHO there is a bug in the case the value is < -1.

Moreover, there is no specification in manual of what the function should
return if the value <= 0 (i.e. that -1 means infinity and values <-1 mean
1).

Tomas Matousek
 [2004-01-29 12:23 UTC] tomas dot matousek at matfyz dot cz 
Not a "bogus".
 [2004-02-22 14:41 UTC] nlopess@php.net 
I think there's nothing to do here.
 
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